Vision Statement •  To become a leading player in solar thermal field      •  Providing innovative, qualitative and economical solutions      •  To reduce considerably the power consumption in air conditioning and refrigeration space      •  And to make a significant contribution to the reduction of global carbon emission.
Date & Time
Custom made solutions for every Solar thermal need Turn-key solutions from design to Installation.
Why Solar?
The market for cold supply is increasing especially in warmer climates, but also in temperature regions.
Water Vapors move from Generator to Condenser where it is condensed by Cooling Water.
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What is Solar Air Conditioning?
  Solar air conditioning refers to an air conditioning (cooling) system that uses solar power, power from the heat obtained from Sunís rays.
  Solar Air conditioning can be done through the generation of electricity using steam turbines or photovoltaic conversions, solar thermal energy conversion using adsoption and absorption systems, or using dessicants like sodium chloride. The specific method used varies based on each individual project needs.

we would be employing ad/absorption and dessicant methods of direct direct conversions of Solar Heat to Cooling energy.

We will not be using Turbines or Photovoltaic solutons, as the Expenses for producing electrical power for running conventional A/C would be two to three times more expensive, compared to the ad/absorption and dessicant methods used by us.
  Details of the different air conditioning systems
  1. Solar thermal power generation:
    A highly curved mirror called a parabolic trough or a system of mirrors called heliostats reflect sunlight and focus it on a pipe, making it so hot that it can boil water into steam. That steam is then used to run a turbine to make electricity. This electricity is used to run the air conditioners.
  2. Photovoltaic conversion to electricity:
    Sunlight can be directly converted to electricity using photovoltaic (PV) cells. PV cells are made of semiconductor material; absorb a certain portion of energy when sunlight strikes them. The absorbed energy knocks electrons loose, allowing them to flow freely. The cells have one or more electric fields that act to force electrons freed by light absorption to flow in a certain direction. This flow of electrons is a current is collected placing metal contacts on the top and bottom of the PV cell.

    These individual PV cells are arranged together in a PV module and the modules are grouped together in an array. Some of the arrays are set on special tracking devices to follow sunlight all day long. The electrical energy from solar cells can then be used directly for powering the air conditioners.
  3. Adsorption and Absorption systems using Solar energy:
    The principle behind (solar) thermal driven cooling is the thermo-chemical process of sorption. A liquid or gaseous substance is either attached to a solid, porous material (adsorption) or is taken in by a liquid or solid material (absorption). The sorbent (like silica gel) is provided with heat (i.e. from a solar heater) and is dehumidified.

    The concept of a thermal driven cooling (Ab/ad sorption) process is graphically given in figure 4.

    Schematics of solar air conditioning and the different circuits used
    • Solar heat will be used to produce steam/ hot water as a first step. This circuit is shown in Blue colour. This is a closed loop. Same water is circulated. There is no external electrical heat used.
    • The steam passes through the absorption chiller, loses its heat to the Refrigerant (Lithium Bromide/Water solution) and returns to the tank for recirculation again.
    • Refrigerant ( Shown in Orange takes the heat from the steam and using the adsorption cycle explained in the write up, produces chilled water from the second loop of water entering the Absorption chiller.( Shown in Green.)
    • The chilled water passes through the Heat exchanger, and cools the air to the required temperature, that in turn cools the target room.
    • The chilled water stored in the tank is increased to continue cooling during the hours when the sun is not shining. It also acts as the buffer for the times when the cloud or other factors affect the amount of heat from the sun.

    Click here to view large image

  4. Cooling with usage of dessicants like Sodium Chloride:
    Desiccant systems are used for direct air treatment, using a combination of dehumidification and evaporative cooling. The concept is shown below.
  Different solutions are used for each installation, depending on the local conditions. Solar powered air conditioning plants installed by them are operational in Germany and other parts of Europe. (Shown below)
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